February was a month.
In 1918, the first thirteen days of February were skipped by Russia as the country moved from the Julian calendar to the Gregorian calendar: 31 January was immediately followed by 14 February. These days were purchased by Anastasia Romanov for the Thirteen-Day Republic. (PROSE: The Book of the War)
Fitz Kreiner once spent several days in February 2001 trying to catch up with the Eighth Doctor in Belgium. During this same time, Anji Kapoor met Fitz and the Eighth Doctor, beginning her travels in the TARDIS after the death of her boyfriend, Dave Young. (PROSE: Escape Velocity)